Audio-to-Notes Transcriber — Melody & Sheet Music
AI-powered tool that converts audio recordings into musical notes, MIDI files, and sheet music. Upload MP3, WAV, or any audio format — get a piano roll visualization, downloadable MIDI, and note-by-note analysis.
How to Use
Drag and drop an MP3, WAV, OGG, or FLAC file onto the upload area.
The AI model processes your audio and extracts notes. This takes 10-30 seconds.
Switch between Piano Roll, Sheet Music, Note List, and MIDI views.
Download the transcription as MIDI or CSV for use in your music software.
Transcribe melodies and extract notes from any audio recording
Hum, whistle, or play a melody — we'll turn it into notes. Useful when you don't have a file at hand.
Names triads from the microphone and stays quiet when it is unsure. Accuracy was measured on clean single-instrument material; a noisy room or an out-of-tune instrument can still fool it — check by ear.
Click a note to jump to that moment in the audio.
Notes, MIDI numbers and frequencies
The anchors a transcription leans on. Middle C is MIDI 60; the tuning reference A4 is MIDI 69 at 440 Hz, and every semitone from it multiplies the frequency by 2^(1/12).
| Note | MIDI | Frequency | Clef |
|---|---|---|---|
| C2 | 36 | 65.41 Hz | Bass |
| C3 | 48 | 130.8 Hz | Bass |
| A3 | 57 | 220.0 Hz | Bass |
| C4 | 60 | 261.6 Hz | Treble |
| A4 | 69 | 440.0 Hz | Treble |
| C5 | 72 | 523.3 Hz | Treble |
| C6 | 84 | 1046.5 Hz | Treble |
| C7 | 96 | 2093.0 Hz | Treble |
The tool writes these numbers into the MIDI file it exports, so a note here and a note in your editor are the same thing. Below middle C the staff switches to bass clef — that is the boundary in the last column.
